Writing & History. History is impossible without the written word as one would lack context in which to interpret physical evidence from the ancient past. Writing records the lives of a people and so is the first necessary step in the written history of a culture or civilization.
Lesson Summary. In review, chemical energy is energy stored in chemicals'. Energy is 'the ability to do work. Chemical energy is a type of potential energy that is energy due to the position of an object or objects.
organic chemistry - the chemistry of compounds containing carbon (originally defined as the chemistry of substances produced by living organisms but now extended to substances synthesized artificially) organism, being - a living thing that has (or can develop) the ability to act or function independently. biochemistry - the organic chemistry of compounds and processes occurring in organisms; the effort to understand biology within the context of chemistry. chemical science, chemistry - the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions. phytochemistry - the branch of organic chemistry dealing with the chemistry of plants.